[B.A.T.M.A.N.] [PATCH 04/12] Staging: batman-adv: wait for call_rcu before unloading module

synchronize_rcu respective synchronize_net only waits for the rcu grace period to elapse and we may fail to finish the calls which were made to call_rcu in that time. In result the module could be unloaded during the execution of the RCU callbacks. rcu_barrier[1] will now wait for all outstanding RCU callbacks to finish before continuing. [1] Documentation/RCU/rcubarrier.txt Signed-off-by: Sven Eckelmann <sven.eckelmann(a)gmx.de> --- drivers/staging/batman-adv/main.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/staging/batman-adv/main.c b/drivers/staging/batman-adv/main.c index 78ceebf..580ca02 100644 --- a/drivers/staging/batman-adv/main.c +++ b/drivers/staging/batman-adv/main.c @@ -72,7 +72,7 @@ static void __exit batman_exit(void) destroy_workqueue(bat_event_workqueue); bat_event_workqueue = NULL; - synchronize_net(); + rcu_barrier(); } int mesh_init(struct net_device *soft_iface) -- 1.7.2.3